I'm too lazy to do the research but I've got a feeling that there are other American novelists who wrote stories set in all of those places. Maybe Robert Ludlum or Tom Clancy, for example. Or maybe Danielle Steele.
Also maybe "abduction" could work in place of "kidnap"
no, abducting and kidnapping are actually two different crimes. While they have similar actions, abducting someone has no motive known until the captive is set free. Kidnappings are done as a way to ransom money or used as a political pawn or bargaining tool. Fine distinction between the two. Both Linberg and Hearst were used to try and gain something from someone. Abduction does not, people are abducted for sole pleasure of the abductor.
A "WASP" is technically anyone who is white and Protestant, but the term is used much more often as a pejorative for a certain kind of white person: stuffy, monied, dull. "WASPy" is used to describe affluent white neighborhoods, for example. You couldn't really call someone like Eminem a WASP, for example. Martha Stewart though...big time WASP.
Also maybe "abduction" could work in place of "kidnap"